Decadal variations in the driving factors of increasing water-use efficiency in China's terrestrial ecosystems from 2000 to 2022
文献类型：期刊论文
| 作者 | Niu, Zhongen3; He, Honglin1,2,7; Zhao, Ying3; Wang, Bin3; Feng, Lili6; Lv, Yan4; Zhang, Mengyu1; Fan, Jiayi5; Li, Zhihao5 |
| 刊名 | ECOLOGICAL INFORMATICS
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 84页码:102895 |
| 关键词 | Water-use efficiency CEVSA-ES model Evapotranspiration Gross primary productivity Chinese terrestrial ecosystem |
| DOI | 10.1016/j.ecoinf.2024.102895 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | Ecosystem water-use efficiency (WUE) is a crucial indicator for evaluating carbon and water cycles. Although greening and climate change have significantly altered the WUE in Chinese terrestrial ecosystems, the roles of physiological and ecological processes are not fully understood. To address this, WUE is broken down into two key ratios: gross primary productivity to transpiration (GPP/T), which mainly reflects the effect of plant physiological processes, and transpiration to evapotranspiration (T/ET), which primarily indicates the impact of vegetation changes. Both ratios are influenced by climate change. This study employed a newly developed satellite-based ecosystem service process model Carbon and Exchange between Vegetation, Soil, and Atmosphere-ecosystem service (CEVSA-ES) to examine the impact of GPP/T and T/ET on WUE in China's terrestrial ecosystems from 2000 to 2022, alongside an analysis of the environmental variables affecting these ratios. This study revealed a general increase in WUE during the study period with significant interdecadal differences. Between 2000 and 2010, WUE was relatively stable (slope = 0.0023 g C kg(-1) H2O a(-1), p > 0.05), primarily because the decrease in GPP/T (p < 0.05) offset the increase in T/ET (p < 0.01). In contrast, from 2010 to 2022, a notable increase in WUE was observed (slope = 0.0145 g C kg(-1) H2O a(-1), p < 0.01), driven primarily by an increase in GPP/T (p < 0.01), whereas T/ET remained relatively unchanged (p > 0.05). Factors affecting GPP/T and T/ET showed considerable variability. Precipitation had the main influence on GPP/T, accounting for 70 % of its variation. The initial decade of the 21st century experienced an overall precipitation deficiency, followed by a sustained surplus in the subsequent years, resulting in interdecadal fluctuations in GPP/T. In contrast, T/ET was affected by a combination of factors, including the leaf area index, temperature, and precipitation, contributing 39 %, 29 %, and 32 %, respectively. The present study advances our understanding of the interaction of terrestrial ecosystem with the atmosphere amid global changes, offering crucial insights for forecasting the future dynamics of carbon and water cycles. |
| WOS关键词 | WACMOS-ET PROJECT ; PARTITIONING EVAPOTRANSPIRATION ; SPATIOTEMPORAL VARIATIONS ; CLIMATE-CHANGE ; TIME-SERIES ; NET PRIMARY ; PATTERNS ; MODELS ; VARIABILITY ; REGRESSION |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS记录号 | WOS:001361389900001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/209479]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | He, Honglin |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Natl Ecosyst Sci Data Ctr, Beijing 100101, Peoples R China 3.Ludong Univ, Coll Hydraul & Civil Engn, Yantai 264025, Shandong, Peoples R China 4.Shandong Univ Technol, Sch Civil Engn & Geomat, Zibo 255000, Peoples R China 5.Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Peoples R China 6.Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China 7.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Niu, Zhongen,He, Honglin,Zhao, Ying,et al. Decadal variations in the driving factors of increasing water-use efficiency in China's terrestrial ecosystems from 2000 to 2022[J]. ECOLOGICAL INFORMATICS,2024,84:102895. |
| APA | Niu, Zhongen.,He, Honglin.,Zhao, Ying.,Wang, Bin.,Feng, Lili.,...&Li, Zhihao.(2024).Decadal variations in the driving factors of increasing water-use efficiency in China's terrestrial ecosystems from 2000 to 2022.ECOLOGICAL INFORMATICS,84,102895. |
| MLA | Niu, Zhongen,et al."Decadal variations in the driving factors of increasing water-use efficiency in China's terrestrial ecosystems from 2000 to 2022".ECOLOGICAL INFORMATICS 84(2024):102895. |
入库方式： OAI收割
来源：地理科学与资源研究所
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